Briefly on the main function of the pe bag?

Low density (high pressure) polyethylene is often used in large quantities. Polyethylene is waxy and has a smooth feel like wax. When it is not dyed, low-density polyethylene is transparent, while high-density polyethylene is opaque. Polyethylene is a high polymer chain formed by repeating -CH2-units through the addition reaction and polymerization reaction of ethylene (CH2u003dCH2).　　 The performance of polyethylene depends on its polymerization method; high-density polyethylene (HDPE) made by Ziegler-Natta polymerization under medium pressure (15-30 atmospheres) organic compound catalytic conditions. The polyethylene molecule polymerized under this condition is linear, and the molecular chain is very long, and the molecular weight is as high as hundreds of thousands. If it is under high pressure (100-300MPA), high temperature (190-210C) peroxide catalyzed conditions, the product produced is low density polyethylene (LDPE), which is a branched structure of PE plastic bag.　　 Polyethylene is insoluble in water and has very little water absorption. Even for some chemical solvents, such as toluene and acetic acid, it only slightly dissolves at a temperature above 70°C. However, particulate polyethylene can also melt or solidify with temperature changes between 15°C and 40°C. When the temperature rises, it melts and absorbs heat; when the temperature decreases, it solidifies and releases heat. And because the pe waterproof bag absorbs very little water, is not easy to be wet, and has insulating properties, it is a good building material. Tag: pe waterproof bag